mccannon



(No Model.)

B. B. MGGANNON.

' GLOBBVALv-B.

A2 Sheets-Sheet 2.

IIN]

nLMER ELLswoRTH McoANNoN, on BARNHAnTs ivnLLs, PENNSYLVANIA.

7 UNITED STATES PATENT vFries.

GLOBE-VALVE.

` SPGIFICATION"forming part of Letters Patent Noi292,34=0, dated `.l'a'nuary 22, 1884.

Y Y Application filed September 24, 1883. (No model.)

.1" all whom it may concern-.-

l Be it known that I, ELMER E. MoCaNNoN, a citizen of the United States of America,- residing at Barnharts Mills, in the county of make and use the same, reference being had to the accompanying drawings, and to lettersy or figures of reference marked thereon, which form a part of'this specification.

This invention relates to certain new and use ful improvements in globe-valves,its object being to improve on the construction of the ordinary globe-valve, so as to provide ameans which will prevent the valve from getting off its seat; also, to do away with a rotary or axial motion of the valve, so that the valve will be presseduponits seat by a direct vertical motion.

My invention consists in providing the valve with guideways, and in the construction and combination of the parts, as will be hereinafter fully set forth, and illustrated in the accompanying drawings;

In the drawings, Figure I is a side elevation of my improvedvalve, with one-half in sectior s. Fig. 2 is a sectional viewA taken through the line x of Fig. 1. Fig. 3 isavertical section taken through the line y y of Fig. 2; and Figs.- 4 and -5 are detailed views, partly in sections.

In the drawings, A represents Y the shell or case of avalve, which is provided with the usual end openings, a ,which are provided with internal screw-threads and an upper opening, a', which is also internally screw-threaded, these openings being comm on to this class of valves. The shell is also provided with a central horizontal valVesea-t, B, from one side of which there is an upwardly-proj ecting wall, b, and on the opposite vside a downwardly-proj ccting wall, b.

It will be readily seen that the foregoing parts of my valve are of ordinary construction,

and may be manufactured in the usual manner.

The shell of this valve is provided on its position. above the valveseatwith two vertical guides, C C,which are cast upon the shell and extend from the edge of the valve-seat upwardly to the upper screw-threaded portion of the shell. The edges of these guides C C are parallel with each other, and they are formed integral with the shell. These guides are fully illustrated in Figs. 2 and S'of the accompanying drawings.

D represents the stemorscrew-spindle,which is used for operating the valve by turning the same, though when this spindle is turned it 4does not raise or lower itself, but converts the rotary movement which is imparted to it by the handle into a vertical movement of the valve. This stem or spindle D is provided at its lower end with a screw-threaded portion, D', above which is formed a shoulder, D2.

E represents the cap or cover of the shell, which is screw-threaded, as shown at e, so as to be secured to the shell or case, and it isprovided on its lower portion with internal screw-threads, e', in which is placed a screwthreaded nut, E', having an external screwthreaded portion and a smooth cylindrical opening through the same. 'Ihe upper end of the nut rests or bears against the shoulder D, formed on the stem, and will hold the same in position against vertical displacement. The upper portion of the cap or coverE is provided with a screw-bushin g of ordinary construction.

The stem D is iirst placed in the cap E and the nut Epassed over the screw-threaded portion D ofthe stem andturnedhome. 'Ihe upper end of this nut bears upon the under side of the shoulder D2, and prevents the stem from moving downwardly. The conical portion of the box E will prevent an upward movement of the stem, as the conical portion of the stem bears against the same.

upper end of the same may be secured in position by a suitable key. The screw-threaded portion of the nut E is ofsufcient length, so that the parts may be tightenedto take up any wear of the shoulder DL or end of the nut E.

rIhe valve F is provided Yon its under side with au inclined or tapering edge, f, which will t snugly upon the valve-seat, and it is provided on its under side with a central hol- After the stem is secured in position, the operating-wl1eel at the low portion, F', also with atransverse slot, G, for the reception of a guide-plate, H. f `his valve is screw-threaded interiorly at the portion shown at f', for the reception of the sere-W D upon the lower end of the stem.

The guide-plate H, hereinbefore referred to, has a central circular opening, h, of larger diameter than thelower end of the screw-threaded portion ofthe stein, and the upper end of the valve is provided with an opening of the same diameter. The guide-plate H is of suicient length to extend beyond the periphery of the valve, andit is provided with notches 71.', which extend inwardly to about the edges of the valve-seat.

It will be seen from the construction hereinbefore described and illustrated that this valve may be readily turned true without the eniployment of specially skilled labor.

Then it is desired to place the parts of the value together, the guide-plate His slipped into the slot G inthe valve, and said valve placed within the valve-seat, the notches hin the end ofthe guide-plate embracing the guides C C, formed within the shell. The cap E is then screwed in place, and the stein being turned enters the screw-threaded socket in the portion Fl of the valve, the parts thus being organized as shown in the accompanying drawings.

The valve F, it will be seen by this construction, is moved in avertieal direction when the stein is turned, and the guide-plate H will hold said valve so that it cannot be displaced, and will prevent a rotary or axial motion of the same.

It will also bev noticed that in the construction of this Valve no packing is required, and both the upperiand lower ends of the stem are braced against a rocking motion, and as there is no rotary motion of the valve there is but little wear; also, there are no joints other than thevalveandvalve-seats that need tobe ground.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The shell A, having outlet andinlct openings, and guides C C, located abovethe valveseat, in combination with a screw-spindle attaehed to the shell, and a valve, F, provided with a transverse slot, in which is placed a, guide-plate, H, 'which is recessed at its ends, so as to embrace the guides C C, substantially as shown, and for the purpose set forth.

2. The shell A, having a-central valve-seat, l

and side guides, C G,f0rn1ed thereon,and means for holding the stein, said stenibeing provided with a screw-threaded end, in combination with avalve, F, having a screw-threaded portion, f, and transverse slot G, for the reception of a guide-plate, H, with recessed end, the parts being organized substantially as shown, and for the purpose set forth.

In testimony whereof` I aiix my signature in presence of two witnesses.

lLllBR ELLSWOR'III- MCMNNON.

Witnesses:

J'. L. Turris, (j. l. HnurinLL. 

